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Add unexpected()

This function makes a common task, saying to the user that an
unexpected token was read from the input.

--- a/cc1/cc1.h

+++ b/cc1/cc1.h

@@ -15,6 +15,7 @@

 extern  struct user_opt options;

 extern void error(const char *fmt, ...);

 extern void warn(signed char flag, const char *fmt, ...);

+extern void unexpected(void);

 /* definitions of types */

--- a/cc1/decl.c

+++ b/cc1/decl.c

@@ -70,7 +70,7 @@

 	} else if (flags) {

 		if (yytoken != IDEN) {

 			if (flags & ID_EXPECTED)

-				error("unexpected '%s'", yytext);

+				unexpected();

 			sym = install("", NS_IDEN);

 		} else {

 			sym = newiden();

@@ -302,7 +302,7 @@

 	case ';':

 		break;

 	default:

-		error("declaration expected");

+		unexpected();

 	}

 	if (yytoken != ';') {

@@ -374,7 +374,7 @@

 	tp->defined = 1;

 	while (yytoken != '}') {

 		if (yytoken != IDEN)

-			error("identifier expected");

+			unexpected();

 		sym = newiden();

 		sym->type = inttype;

 		if (accept('='))

@@ -512,7 +512,7 @@

 		expect(';');

 		return;

 	default:

-		error("declaration expected");

+		unexpected();

 	}

 }

--- a/cc1/error.c

+++ b/cc1/error.c

@@ -41,3 +41,10 @@

 	warn_helper(-1, fmt, va);

 	va_end(va);

 }

+

+void

+unexpected(void)

+{

+	error("unexpected '%s'", yytext);

+}

+

--- a/cc1/expr.c

+++ b/cc1/expr.c

@@ -302,7 +302,7 @@

 	Field *fp;

 	if (yytoken != IDEN)

-		error("unexpected '%s'", yytext);

+		unexpected();

 	switch (np->typeop) {

 	case STRUCT: case UNION:

 		for (fp = np->utype->u.fields; fp; fp = fp->next) {

@@ -477,7 +477,7 @@

 	Node *np;

 	if ((np = unary()) == NULL)

-		error("unexpected '%s'", yytext);

+		unexpected();

 	tp = np->type;

 	/* TODO: free np */

 	return tp;

@@ -530,7 +530,7 @@

 		tp = typename();

 		expect(')');

 		if ((np1 = eval(cast())) == NULL)

-			error("unexpected '%s'", yytext);

+			unexpected();

 		if ((np2 = convert(np1,  tp, 1)) == NULL)

 			error("bad type convertion requested");

 		np2->b.lvalue = np1->b.lvalue;

--- a/cc1/lex.c

+++ b/cc1/lex.c

@@ -412,7 +412,7 @@

 expect(register uint8_t tok)

 {

 	if (yytoken != tok)

-		error("unexpected %s", yytext);

+		unexpected();

 	next();

 }

--- a/cc1/stmt.c

+++ b/cc1/stmt.c

@@ -193,7 +193,7 @@

 	expect(GOTO);

 	if (yytoken != IDEN)

-		error("unexpected '%s'", yytext);

+		unexpected();

 	emitjump(label(yytext, 0), NULL);

 	next();

 	expect(';');

@@ -211,7 +211,7 @@

 	expect(SWITCH);

 	expect ('(');

 	if ((cond = expr()) == NULL)

-		error("expected expression before '%s'", yytext);

+		unexpected();

 	if ((cond = convert(cond, inttype, 0)) == NULL)

 		error("incorrect type in switch statement");

 	expect (')');

@@ -242,7 +242,7 @@

 	if (!lswitch)

 		error("case label not within a switch statement");

 	if ((np = expr()) == NULL)

-		error("expected expression before '%s'", yytext);

+		unexpected();

 	if ((np = convert(np, inttype, 0)) == NULL)

 		error("incorrect type in case statement");

 	expect(':');

-- 

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